| article html file updated | 8 February 2020 03:40 CET | Update | https://www.mdpi.com/1424-8220/17/4/871 |
| article html file updated | 24 September 2019 08:14 CEST | Update | - |
| article html file updated | 4 May 2019 02:04 CEST | Update | - |
| article html file updated | 29 April 2017 14:15 CEST | Update | - |
| article html file updated | 18 April 2017 05:24 CEST | Original file | - |
| article xml uploaded. | 18 April 2017 05:23 CEST | Update | https://www.mdpi.com/1424-8220/17/4/871/xml |
| article pdf uploaded. | 18 April 2017 05:23 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/4/871/pdf |
| article pdf uploaded. | 15 April 2017 08:10 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/871/pdf-vor |
